<!DOCTYPE html>
<html>
<head>
	<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
	<title>thu thoi</title>
</head>
<body>
	<div class="thu">
		<a href="#" data-id-collection='0' >click vo di</a>
	</div>
	<script type="text/javascript">

		$(".thu a").click(function(){
			$(".thu").append("<a href='#' class='them' data-id-collection='1'>cai nay</a>");
		});

		// $(".them").ready(function(){
		// 	$(this).attr("data-id-collection");

</html>